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FE Power Forums => FE Technical Forum => Topic started by: sanddoc on December 11, 2014, 11:04:20 PM

Title: 61 390 HP
Post by: sanddoc on December 11, 2014, 11:04:20 PM

Hi all
 I've searched the net but can't find the specs I'm looking for
Can anyone give me the cam specs for the 390 375 HP  from 1961
thanks
Best

Title: Re: 61 390 HP
Post by: Heo on December 12, 2014, 12:24:22 AM

I think its 286/446

Title: Re: 61 390 HP
Post by: RJP on December 12, 2014, 01:42:35 PM

Quote from: sanddoc on December 11, 2014, 11:04:20 PM

Hi all
 I've searched the net but can't find the specs I'm looking for
Can anyone give me the cam specs for the 390 375 HP  from 1961
thanks
Best

The cam for the 375/401HP-390  is .479" lift, 276 deg duration and is the same cam as the 1960 HP 352 and the 62 406 cam but with minor timing changes. Part no. is C0AE 6250-B [60-61] and C2AZ 6250-A [62] Timing for the C2AZ cam is intake: open 24* BTDC, close 72 ABDC Exhaust open: 72* BBDC close 24* ATDC with 48* overlap. Valve lash is .025"  Forgot to add: The C2AZ cam is the service replacement cam for the earlier 60-61 HP cam.

Title: Re: 61 390 HP
Post by: WerbyFord on December 13, 2014, 06:34:22 AM

I still cant figure if they all had .525 gross / .500 net lift or if some had .500 gross / .480 net lift but it makes little difference, 3-4hp on top maybe.
Could be that the early ones used .480 net lift as valve springs were still not that great in the early 1960s.

In either case, near as I can figure the .050 durations are
228-228
LSA is 114.0 to 114.5 for all, straight up or close to it ie zero advance.

The old crane 294 I think is an exact clone.
I like the Comp 270s at 224-224-110 and 4 advance, it sounds & idles just like the Ford cam, peaks a few 100 rpm lower, but pulls stronger in between.

Here is a good thread from Dennis:
http://www.network54.com/Forum/74182/thread/1228415300/FE+1960+352+HP+camshaft+specifications-+-+PART+2